185 



Oxygen 



Ontogenesis: influence of nutrition, II. 8. 

 Orange (Oranjeappel), III. 162. 

 Orchids: II. 143. 



- germination, IV. 263, 265*. 



- mycorrhiza, IV. 263, 265*. 



Organ formation : see Morphogenesis, 

 and: Mutation, organ forming . 



Organogenic influence on plant tissue by 

 foreign substances, see : Morphogenetic 

 substances. 



Orge : see Barley. 



Origin of Species, I. 326, 406, 407, 419- 

 424, 426; III. 205; IV. 46, 47; V. 65; 

 VI. 80-86, see also: Species, physiologi- 

 cal. 



Orme: see Elm. 



Orseille Lichens, V. 153. 



Orthogenesis, IV. 339, 340. 



Orthospinae wasp, parthenogenesis, I. 

 252. 



Oscillaria: cultivation, IV. 109, 128. 



- influence of nitrogen compounds, IV. 

 106, 109, 126. 



- relation between light and microaero- 

 phily, IV. 126. 



Osmosis, in colloids, IV. 344-346. 

 Osmotic pressure, bacteria sensible for - 



(tonotaxus), III. 245, 249-252. 

 Oviposition and ovipositor of Gall wasps, 



structure, I. 142-149, 165-181, 194, 



195, 202, 209, 223-225, 234-237, 251, 



255-257, 268, 269, 273*-281*; II. 105, 



124-126; VI. 49-57*. 

 Oxalate as a carbon source, IV. 81, 82, 



90; VI. 4. 

 Oxidases: III. 332, 336; IV. 10, 11; V. 



114, 143, 218, 252-254. 



- as the genes of the respiration func- 

 tion, V. 252-254. 



Oxidation: and growth, separate proces- 

 ses, V. 179, 185, 188, 191. 



- fermentation , III. 15. 



- "intramolecular", II. 151; IV. 193, 

 194, 210. 



- of hydrogen, IV. 379; V. 137, 228, 231. 



- of manganese carbonate by micro- 

 organisms, V. 141, 143, 148. 



of mannitol to laevulose by acetic 

 acid bacteria, IV. 120, 286. 



- of nitrite, IV. 379; V. 191; VI. 71. 



- of nitrous oxide, IV. 380, 381, 383. 



- of organic acids by Azotobacter, IV. 

 110, 112, 113, 161, 165, 175, 258. 



- of pigments and chromogens, II. 333- 

 334-337, 352, 358*. 



Oxidation: of sulphur and sulphur com- 

 pounds, IV. 202, 205-211, 242-248, 379; 

 V. 135-137, 139, 228, 231, 281-288. 



- power of the soil, IV. 14; VI. 25. 



- processes of Bacterium xylinum, V. 

 236, 237. 



- processes of pigment bacteria, V. 1- 



10, 112, 113. 

 Oxidones, V. 253. 

 Oxybiophores, IV. 130. 

 Oxypangens, IV. 130. 

 Oxygen: carrier, III. 168. 



- compounds as oxygen sources, II. 

 151 ; III. 88, 89, 95-101, 322; IV. 352, 

 374-378, 383; VI. 79. 



demonstration by growth of bacteria, 



11. 302, 303, 340; III. 314, 315, see 

 also: Respiration figures. 



- demonstration by means of indigo, II. 

 204, 234, 235, 246, 302, 304; III. 73-76, 

 88. 



demonstration by means of luminous 

 bacteria, II. 205, 231, 302, 304; III. 25, 

 73; IV. 129-132, 194, 211; VI. 79. 



- demonstration by means of motility 

 of bacteria, III. 38, 167. 



- determination, quantitative, III. 73, 

 88. 



elimination from cultures, see: Anae- 

 robic cultures. 



- excitation , II. 151, 152, 203, 206, 

 207, 209, 235, IV. 193, 194, 210, 211, 

 352; VI. 10, see also: Oxygen, relation 

 to anaerobics. 



- form (aerobic form) of Granulobacter 

 III. 39, 67, 68, 71, 75*, 82*, 123, 

 316; IV. 147, 164, 224, 225; VI. 73. 



- free, in solutions of sulphuretted hy- 

 drogen and sulphites, IV. 194. 



- in relation to agglutination by Lac- 

 tococcus agglutinans, IV. 317, 318. 



- in relation to anaerobics, II. 151, 

 153, 154, 203, 209, 246, 340; III. 15, 

 16, 29, 33, 37, 38, 39, 61, 68, 71, 75, 

 77, 82*, 87, 88, 95-97-101, 118, 123*- 

 125, 247, 313-322; IV. 25, 110, 115, 

 116, 147, 149, 151-154, 193, 194, 197, 

 199, 210, 211, 220, 222, 224, 279, 280, 

 352; V. 11-14, 19, 33, 203, 204, 215, 

 277; VI. 3, 10, 24, 27, 73. 



- in relation to anaerobics, contact 

 caused by gas production and during 

 transferring, III. 15, 95-101; V. 33. 



in relation to anaerobics when reducible 

 substances are absent, III. 89, 97, 100. 



